<template>
<div class="app-container">
    <!-- 顶部 Header 区域 -->
    <mt-header fixed title="黑马程序员">
		<span slot="left" @click="goback" v-show="flag">
    		<mt-button icon="back">返回</mt-button>
  		</span>
	</mt-header>
    <!-- 中间 router-view 区域 -->
    <transition>
		<router-view></router-view>
	</transition>
    <!-- 底部 Tabbar 区域 -->
    <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-zm" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-zm" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-zm" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">{{ $store.getters.getallcount }}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-zm" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
		

    
</div>

    
</template>
<script>
export default {
	data(){
		return{
			flag:false
			

		}
	},
	created(){
		if(this.$route.path === '/home'){
			this.flag = false
		}else{
			this.flag = true
		}

	},
	methods:{
		goback(){
			//点击后退
			this.$router.go(-1);
			
		}
	},
	watch:{
		//当浏览器地址是/home的时候，隐藏返回
		'$route.path':function(newval){
		 	if(newval === '/home'){
				 this.flag = false
			 }else{
				 this.flag = true
			 }
		}
	}

}


</script>
<style lang='scss' scoped>
    .app-container{
        padding-top:40px;
		padding-bottom: 50px;
		overflow-x: hidden;
    }
	.v-enter
	{
		opacity: 0;
		transform: translateX(100%);
	}
	
	.v-leave-to
	{
		opacity: 0;
		transform: translateX(-100%);
		position: absolute;
	}
	.v-enter-active,
	.v-leave-active{
		transition: all 0.5s ease;
	}
//改类名 ，解决tabbar切换报错的问题
 .mui-bar-tab .mui-tab-item-zm.mui-active {
   color: #007aff;
   z-index: 999;
}
.mui-bar-tab .mui-tab-item-zm {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}

.mui-bar-tab .mui-tab-item-zm .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}
.mui-bar-tab .mui-tab-item-zm .mui-icon ~ .mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}
.mint-header{
	z-index: 99;
}

</style>


